Ernst Mecklenburg (born 3 June 1927) is a former East German politician who served as Chairman of the Democratic Farmers' Party of Germany (DFD).

Mecklenburg was born in Blöcken (now Osokino [de; ru] in Guryevsky District, Kaliningrad Oblast) in East Prussia in 1927 to a farming family.

After the war, Mecklenburg was active in both agriculture and mining in the newly-formed German Democratic Republic.

In 1954, he became district secretary of the DFD in Rostock and in 1963 was made a member of the executive committee of the party.

In 1982, Mecklenburg succeeded Ernst Goldenbaum as chairman of the party and served in this capacity until his own retirement from politics for health reasons.